gmtime的返回不正确小时 [英] gmtime returning incorrect hour

问题描述

我检索GMT时间在C ++ / C。但其返回不正确小时。例如，现在的时刻应该是上午9点，但结构TM 对象返回凌晨3点。任何想法，为什么还是什么我做错了？

  time_t的rawtime;
结构TM * PTM;
时间（安培; rawtime）;
PTM = gmtime的（安培; rawtime）;的std :: stringstream的SS;
SS＆LT;＆LT; ptm-＆GT; tm_hour; //输出3时，它应该是9
 

gmtime的应该总是返回UTC / GMT时间无论在哪里，用户或他们有什么区设置正确？

解决方案

  

gmtime的应该总是返回UTC / GMT时间无论在哪里，用户或他们有什么区设置正确？

是的，只要他们的计算机时钟设置是否正确。

显然你不是。

I am retrieving the GMT time in c++/c. But its returning the incorrect hour. For example right now the hour should be 9am but the struct tm object returns 3am. Any idea why or what I am doing wrong?

time_t rawtime;
struct tm* ptm;
time(&rawtime);
ptm = gmtime(&rawtime);

std::stringstream ss;
ss << ptm->tm_hour; // outputs "3" when it should be "9"

gmtime should always return the UTC/GMT time regardless of where the user is or what timezone setting they have right?

解决方案

gmtime should always return the UTC/GMT time regardless of where the user is or what timezone setting they have right?

Yes, as long as their computer clock is set correctly.

Evidently yours is not.

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